1,721,028 research outputs found

    Biometrics and Statistics Section activities (2015)

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    This document provides highlights of the activities completed by Biometrics and Statistics Section during 2015. These are given along the following line items of the Workplan 2015. Activity titles: 1. Advisory Support to Research Projects (BSS-1) 2. Exploitation of Advanced Biometrical and Statistical Techniques (BSS-2) 3. International Crop Information System (ICIS) Support (BSS- 3) 4. Bioinformatics Support (BSS-4) 5. Biometrical and Statistical Computing (BSS-5) 6. Statistical software, data management and analysis (BSS-6) 7. Training (BSS- 7) 8. Support to DDG-R Office (BSS-8

    IDENTIFYING SOME HERBICIDE RESISTANT GRASSES, MONITORING THEIR NATURE AND DISTRIBUTION IN SOUTHWESTERN PART OF ALEPPO CITY, SYRIA

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    It is common to say that weeds in Syria have developed resistance to herbicides, but this needs to be confirmed by research studies which are rare in the area. This study is run to describe and diagnose those weeds, and to monitor their nature and allocate their distribution in the Quaik river area in the southwestern part of Aleppo city in Syria. Seeds of suspected resistant grasses have been collected during the 2010 summer from Al-Eis, Al-Hadher and Banes, which were theoretically identified as resistant biotype to (ACCase) herbicides. In addition to seeds of grasses collected from ICARDA Tel Hadya station which were expected as sensitive biotype, taking into account that the seeds were preserved properly for the 2011/2012 season. In this experiment four herbicides have been used, two ACCase inhibitors, Ralon super (fenoxaprop-p-ethyl) and Topik (clodinafobpropargyl), the other two ALS inhibitors, Atlantis (mesosulfuron + iodosulfuron) and Pallas (pyroxsulam). The results showed that, the short spike canarygrass (Phalaris brachystachys L.) was the most risky in this area which have developed resistance to the (ACCase) in all locations including Tel Hadya station, the hood canarygrass (Phalaris paradoxa L.) came second in its resistance shown to the (ACCase) at all locations except Tel Hadya station. The wild oat (Avena fatua L.) came third, the results shown developed resistance to the (ACCase) in two locations Al-Hadher and Banes, sensitive in Tel Hadya station, while the results at Al-Eis were uncertain

    ICARDA’s Strategy for Biometrics and Statistics Support to its Research (2016-2020)

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    This document describes the goals and objectives of Biometrics and Statistics Section (BSS), highlights current status and the challenges in the changing agricultural landscape to sustainably support the livelihood and the environment. BSS aims to provide biometric and statistics support to programs on planning of experiments and surveys, analysis of data, drawing statistical inferences, presentation of results, and statistical review of scientific documents. It also shares the relevant techniques and tools with the NARS scientists through training courses. BSS devises new methodologies for specialized situations if not available. Another area of expertise is to develop statistical computing modules and share them with ICARDA and NARS scientists. This effort leads to enhance the reliability, efficiency, repeatability and interpretability of experimental results leading to high level of science quality. It lists a number of key statistical issues and ongoing activities. The clusters of activities mentioned in the preproposals for 2nd Call of CRP DCLAS and Wheat have also been listed for easy harmonization of ICARDA BSS activities

    Report of Biometrics and Statistics Activities During 2016

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    Delivered biometrics and statistics support to the scientists and students on experimental design and statistical analysis, developed computing codes and carried out data analyses, helped in drawing inferences, suggested on presentations and conducted statistical reviews

    Experimental Designs for Precision in Phenotyping

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    Precision phenotyping is the evaluation of a genotype’s expression in a given environment with minimum influence of experimental error. This chapter presents the basic principles of experimental designs and lists commonly used experimental designs for phenotyping crop genotypes. Experimental designs include unreplicated designs, incomplete block designs, and variable replication block designs which can also be generated using some selected software. This chapter illustrates some of such experimental designs and key directives of the software which can be used to generate and analyze these designs have also been included

    Course Report on Geoinformatics application in agriculture and resilience

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    The Tigers and Euphrates rivers are the main sources of water supply in Iraq; these two sources are largely utilized in agriculture sector which consumers about 85 % of the total quantity received. However, with haphazard climate change impacts due to unprecedented drought, which has eclipsed previously notable low-rainfall years in 2009 and 2015, and trans boundary withholdings of surface water from upstream Syria and Turkey, the country’s name “the land between the two rivers” is now becoming a misnomer. In 2018, as the summer wore on, Iraq’s cultivated areas were reduced by half compared to the previous year. The disappearing agricultural lands may spark a displacement crisis far beyond what Iraq has already suffered after a three-year war against so-called Islamic State (ISIS). From the Isis crisis and the military operation against the jihadi group, Iraq had nearly three million internally displaced persons (IDPs). The Third Country Training Program, one of JICA’s capacity building program, is a typical example which respond and provide science-based technical solution to above critical issues. Statistical design, data analysis and Geoinformatics application are crucial for identifying and managing water resources for irrigation, and agricultural water economics and impact assessment of water resource management are essential for better agricultural water policies and institutions with efficient use of limited water resource in Iraq

    Work-plan 2017: Biometrics and Statistics Section

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    Biometrics and Statistics support will be made available in the design of experiments, data analysis and inference, and statistical review of scientific manuscripts. Support will also be given in statistical computing and other software of interest to the researchers. Through involvement in the CRPs and Generation Challenge Program, we shall have strong involvement in research and spatial database management including ICIS, long-term trials and Bioinformatics work which will focus on data management, identification of crop varieties for spatial adaptation and temporalstability, estimation of yield-trends in long-term trials, and analysis of molecular marker data, expression data and spatial modeling. It is expected that BSS will be involved in providing Research Methods supports to CRPs and bilateral projects by organizing training courses on experimental designs and statistical data analysis, and providing technical backstopping to NARS scientists at various Action and Satellite sites

    Quick Setup Guide of ODK App with Google drive

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    This document outlines the steps to set up to an Android device (i.e. smart phones/tablets) to make it ready for use with Open Data Kit (ODK) using Google drive as server

    Wide range of genetic variabilrty for herbicide tolerance in Faba bean

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    Weeds have emerged as major constraint to faba bean productivity. A study was caried out to evaluate faba bean lines to post-emergence herbicides with 210 g a.i.lha Metribuzin (photosynthesis inhibitor, PI), 82 ga.i.lha Oxyfluorfen and15 ga.i.lha Imazethapyr (amino acid synthesis inhibitor). A set of 140 accessions were planted in augmented design with three repetitive checks (ILB 1 8 14, BPLT 1 0 and Elizar) at Marchouch station, Morocco and the same accessions along with 28 adVanced lines were evaluated in alpha design with two replications at Terbol station, Lebanon. In both locations, each plot was divided in three sub-plots for herbicide treatments (Tl for Metribuzin, T2 for Ox/luorfen,T3Imazethapyr) and a control (water spray, C). Herbicide tolerance score, HTS (1-5 scale) was recorded at 3- and 5-weeks after herbicide treatment, where 1 : highly tolerant (similar appearance as C), 3 - moderately tolerant (clear difference on plant appearance comparing with C, with necrosis in lower leaves and less than25o/o death of the plants), 4 : sensitive (no further development of new leaves with severe burning of leaves with more death between 25o/o and 75"/o of the plants), and 5 : highly sensitive (compiete burning of leaves leading to more IhanT5o/o mortality of the plants). Plant height and seed weight were recorded for the treated sub-plots and the controls. Data were analyzed for each location separately and the results indrcated significant differences among genotlpes and treatments for plant height and seed weight in both locations. In both locations plant height was lower in treated plots than the control. Chlorosis, rolling of apical leaves, reduced growth, and lower nurnber of pods and mortality were sighted on the genotypes for the three herbicides. Oxyfluorfen affected the growth of most of faba bean genotlpes at early stage, but after three weeks tolerant lines showed recovery of vegetative growth and showed no significant difference for seed weight between treated and non-treated plots. Among the tested lines 62 were considered tolerant to Metribuzin, 72 were tolerant to Oxyfluorfen and 46 were tolerant to Imazethapy

    Statistical Design and Analysis of Date Palm Insect Pest Management Experiments

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    This chapter discusses selected experimental design and data analyses in the context of date palm insect experiments. This chapter illustrates the number of infested fruit, an analysis of repeated measurements, and estimates the number of juvenile nematodes of two species and three sizes found in a date palm species with real data. It presents an analysis of dosebinary response data with an aim to estimate the lethal dose and it provides a World Wide Web link for computation
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